Merge branch 'master' into add_zoom_to_android_webview

* master: (490 commits)
  Allow neutral conclusion in publishing check (flutter#4321)
  Revert "[image_picker] add forceFullMetadata to interface" (flutter#4314)
  [image_picker] add forceFullMetadata to interface (flutter#4288)
  [flutter_plugin_tools] Adjust diff logging (flutter#4312)
  Remove gradle.properties from plugins (flutter#4309)
  build-examples .pluginToolsConfig.yaml support (flutter#4305)
  [camera_web] Make plugin publishable for the first time. (flutter#4304)
  adds option to re-authenticate on google silent sign in (flutter#4251)
  [ci.yaml] Add builders to recipes cq (flutter#4306)
  Add scripts for Windows LUCI recipe (flutter#4303)
  [video_player] Ensure seekTo is not called before video player is initialized.  (flutter#4300)
  Ensure setExposureOffset returns new value on Android (flutter#4301)
  Add a way to opt a file out of Dart formatting (flutter#4292)
  [flutter_plugin_tools] Add Linux support to native-test (flutter#4294)
  [image_picker]Android update cache (flutter#4124)
  [flutter_plugin_tools] Fix build-examples for packages (flutter#4248)
  [flutter_plugin_tool] Migrate 'publish' to new base command (flutter#4290)
  [flutter_plugin_tool] Move branch-switching logic from tool_runner.sh to tool (flutter#4268)
  [flutter_plugin_tool] Add support for running Windows unit tests (flutter#4276)
  [camera_web] Do not flip the video on the back camera (flutter#4281)
  ...

# Conflicts:
#	packages/webview_flutter/webview_flutter/CHANGELOG.md
#	packages/webview_flutter/webview_flutter/android/src/main/java/io/flutter/plugins/webviewflutter/FlutterWebView.java
#	packages/webview_flutter/webview_flutter/pubspec.yaml

.ci.yaml

@@ -0,0 +1,68 @@
+# Describes the targets run in continuous integration environment.
+#
+# Flutter infra uses this file to generate a checklist of tasks to be performed
+# for every commit.
+#
+# More information at:
+#  * https://github.com/flutter/cocoon/blob/master/CI_YAML.md
+enabled_branches:
+  - master
+
+platform_properties:
+  linux:
+    properties:
+      caches: >-
+        [
+        ]
+      dependencies: >
+        [
+          {"dependency": "curl"}
+        ]
+      device_type: none
+      os: Linux
+  windows:
+    properties:
+      caches: >-
+        [
+          {"name": "vsbuild", "path": "vsbuild"},
+          {"name": "pub_cache", "path": ".pub-cache"}
+        ]
+      dependencies: >
+        [
+          {"dependency": "certs"}
+        ]
+      device_type: none
+      os: Windows
+
+targets:
+  - name: Windows Plugins master channel
+    recipe: plugins/plugins
+    timeout: 30
+    properties:
+      add_recipes_cq: "true"
+      target_file: windows_build_and_platform_tests.yaml
+      dependencies: >
+        [
+          {"dependency": "vs_build"}
+        ]
+    scheduler: luci
+
+  - name: Windows Plugins stable channel
+    recipe: plugins/plugins
+    timeout: 30
+    properties:
+      add_recipes_cq: "true"
+      target_file: windows_build_and_platform_tests.yaml
+      channel: stable
+      dependencies: >
+        [
+          {"dependency": "vs_build"}
+        ]
+    scheduler: luci
+
+  - name: Linux ci_yaml plugins roller
+    recipe: infra/ci_yaml
+    timeout: 30
+    scheduler: luci
+    runIf:
+      - .ci.yaml

.ci/Dockerfile

@@ -1,8 +1,15 @@
-FROM cirrusci/flutter:stable
+# The Flutter version is not important here, since the CI scripts update Flutter
+# before running. What matters is that the base image is pinned to minimize
+# unintended changes when modifying this file.
+FROM cirrusci/flutter:2.2.2
 
-RUN sudo apt-get update -y
+RUN apt-get update -y
 
-RUN sudo apt-get install -y --no-install-recommends gnupg
+# Required by Roboeletric and the Android SDK.
+RUN apt-get install -y openjdk-8-jdk
+ENV JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
+
+RUN apt-get install -y --no-install-recommends gnupg
 
 # Add repo for gcloud sdk and install it
 RUN echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main" | \
@@ -11,7 +18,7 @@ RUN echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.
 RUN curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | \
     sudo apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -
 
-RUN sudo apt-get update && sudo apt-get install -y google-cloud-sdk && \
+RUN apt-get update && apt-get install -y google-cloud-sdk && \
     gcloud config set core/disable_usage_reporting true && \
     gcloud config set component_manager/disable_update_check true
 
@@ -24,20 +31,20 @@ RUN yes | sdkmanager \
 RUN yes | sdkmanager --licenses
 
 # Install formatter.
-RUN sudo apt-get install -y clang-format
+RUN apt-get install -y clang-format
 
 # Install xvfb to allow running headless
-RUN sudo apt-get install -y xvfb libegl1-mesa
+RUN apt-get install -y xvfb libegl1-mesa
 # Install Linux desktop build tool requirements.
-RUN sudo apt-get install -y clang cmake ninja-build file pkg-config
+RUN apt-get install -y clang cmake ninja-build file pkg-config
 # Install necessary libraries.
-RUN sudo apt-get install -y libgtk-3-dev libblkid-dev liblzma-dev
+RUN apt-get install -y libgtk-3-dev libblkid-dev liblzma-dev libgcrypt20-dev
 
 # Add repo for Google Chrome and install it
 RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
 RUN echo 'deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main' | sudo tee /etc/apt/sources.list.d/google-chrome.list
-RUN sudo apt-get update && sudo apt-get install -y --no-install-recommends google-chrome-stable
+RUN apt-get update && apt-get install -y --no-install-recommends google-chrome-stable
 
 # Make Chrome the default so http: has a handler for url_launcher tests.
-RUN sudo apt-get install -y xdg-utils
+RUN apt-get install -y xdg-utils
 RUN xdg-settings set default-web-browser google-chrome.desktop

.ci/java8.Dockerfile

@@ -0,0 +1,33 @@
+FROM cirrusci/flutter:stable
+
+RUN apt-get update -y
+
+# Required by Roboeletric and the Android SDK.
+RUN apt-get install -y openjdk-8-jdk
+ENV JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
+
+RUN apt-get install -y --no-install-recommends gnupg
+
+# Add repo for gcloud sdk and install it
+RUN echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main" | \
+    tee -a /etc/apt/sources.list.d/google-cloud-sdk.list
+
+RUN curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | \
+    apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -
+
+RUN apt-get update && apt-get install -y google-cloud-sdk && \
+    gcloud config set core/disable_usage_reporting true && \
+    gcloud config set component_manager/disable_update_check true
+
+RUN yes | sdkmanager \
+    "platforms;android-27" \
+    "build-tools;27.0.3" \
+    "extras;google;m2repository" \
+    "extras;android;m2repository"
+
+RUN yes | sdkmanager --licenses
+
+# Install formatter.
+RUN apt-get install -y clang-format
+# Required by Roboeletric and the Android SDK.
+RUN apt-get install -y openjdk-8-jdk

.ci/scripts/build_examples_win32.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+dart ./script/tool/bin/flutter_plugin_tools.dart build-examples --windows \
+   --packages-for-branch

.ci/scripts/drive_examples_win32.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+dart ./script/tool/bin/flutter_plugin_tools.dart drive-examples --windows \
+   --packages-for-branch

.ci/scripts/prepare_tool.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# To set FETCH_HEAD for "git merge-base" to work
+git fetch origin master
+
+cd script/tool
+dart pub get

.ci/targets/windows_build_and_platform_tests.yaml

@@ -0,0 +1,8 @@
+
+tasks:
+  - name: "prepare tool"
+    script: .ci/scripts/prepare_tool.sh
+  - name: "build examples"
+    script: .ci/scripts/build_examples_win32.sh
+  - name: "drive examples"
+    script: .ci/scripts/drive_examples_win32.sh