cc: Add LayerTreeHost::InitParams for LayerTreeHost creation.

Instead of passing in a number of things to the LayerTreeHost constructor,
use a struct to simplify the code a bit, and make this more readable. This
also makes it easy to maintain a development branch that adds new things.

TBR=jam@ for API usage update in android_webview/, components/, and content/

BUG=436952

Review URL: https://codereview.chromium.org/1126253005

Cr-Commit-Position: refs/heads/master@{#329164}

1 files changed, 6 insertions, 3 deletions

diff --git a/content/test/web_layer_tree_view_impl_for_testing.cc b/content/test/web_layer_tree_view_impl_for_testing.cc
index 1b2f5f6..6d41220 100644
--- a/content/test/web_layer_tree_view_impl_for_testing.cc
+++ b/content/test/web_layer_tree_view_impl_for_testing.cc
@@ -7,6 +7,7 @@
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
+#include "base/thread_task_runner_handle.h"
 #include "cc/base/switches.h"
 #include "cc/blink/web_layer_impl.h"
 #include "cc/input/input_handler.h"
@@ -43,9 +44,11 @@ void WebLayerTreeViewImplForTesting::Initialize() {
 
   // Accelerated animations are enabled for unit tests.
   settings.accelerated_animation_enabled = true;
-  layer_tree_host_ = cc::LayerTreeHost::CreateSingleThreaded(
-      this, this, nullptr, nullptr, nullptr, settings,
-      base::MessageLoopProxy::current(), nullptr);
+  cc::LayerTreeHost::InitParams params;
+  params.client = this;
+  params.settings = &settings;
+  params.main_task_runner = base::ThreadTaskRunnerHandle::Get();
+  layer_tree_host_ = cc::LayerTreeHost::CreateSingleThreaded(this, &params);
   DCHECK(layer_tree_host_);
 }