Plugin Power Saver: Fix implicitly sized and below the fold plugins.

content/renderer/pepper/plugin_instance_throttler_impl_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/renderer/pepper/plugin_instance_throttler_impl.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebPluginParams.h"
 #include "ui/gfx/canvas.h"
 
 using testing::_;
 using testing::Return;
 
 class GURL;
 
 namespace content {
 
 class PluginInstanceThrottlerImplTest
     : public testing::Test,
       public PluginInstanceThrottler::Observer {
  protected:
+  const int kMaximumFramesToExamine =
+      PluginInstanceThrottlerImpl::kMaximumFramesToExamine;
+
   PluginInstanceThrottlerImplTest() : change_callback_calls_(0) {}
   ~PluginInstanceThrottlerImplTest() override {
     throttler_->RemoveObserver(this);
   }
 
   void SetUp() override {
     blink::WebRect rect;
     rect.width = 100;
     rect.height = 100;
-    throttler_.reset(new PluginInstanceThrottlerImpl(
-        nullptr, GURL("http://example.com"), true /* power_saver_enabled */));
+    throttler_.reset(
+        new PluginInstanceThrottlerImpl(true /* power_saver_enabled */));
+    throttler_->Initialize(nullptr, GURL("http://example.com"),
+                           "Shockwave Flash", rect);
     throttler_->AddObserver(this);
   }
 
   PluginInstanceThrottlerImpl* throttler() {
     DCHECK(throttler_.get());
     return throttler_.get();
   }
 
   void DisablePowerSaverByRetroactiveWhitelist() {
     throttler()->MarkPluginEssential(
@@ skipping 67 matching lines @@
 
   // Throttle after consecutive interesting frames.
   throttler()->OnImageFlush(&interesting_bitmap);
   throttler()->OnImageFlush(&interesting_bitmap);
   throttler()->OnImageFlush(&interesting_bitmap);
   throttler()->OnImageFlush(&interesting_bitmap);
   EXPECT_TRUE(throttler()->IsThrottled());
   EXPECT_EQ(1, change_callback_calls());
 }
 
+TEST_F(PluginInstanceThrottlerImplTest, MaximumKeyframesAnalyzed) {
+  EXPECT_FALSE(throttler()->IsThrottled());
+  EXPECT_EQ(0, change_callback_calls());
+
+  SkBitmap boring_bitmap;
+
+  // Throttle after tons of boring bitmaps.
+  for (int i = 0; i < kMaximumFramesToExamine; ++i) {
+    throttler()->OnImageFlush(&boring_bitmap);
+  }
+  EXPECT_TRUE(throttler()->IsThrottled());
+  EXPECT_EQ(1, change_callback_calls());
+}
 TEST_F(PluginInstanceThrottlerImplTest, IgnoreThrottlingAfterMouseUp) {
   EXPECT_FALSE(throttler()->IsThrottled());
   EXPECT_EQ(0, change_callback_calls());
 
   // MouseUp before throttling engaged should not be consumed, but should
   // prevent subsequent throttling from engaging.
   SendEventAndTest(blink::WebInputEvent::Type::MouseUp, false, false, 0);
 
   EngageThrottle();
   EXPECT_FALSE(throttler()->IsThrottled());
@@ skipping 71 matching lines @@
   event.modifiers = blink::WebInputEvent::Modifiers::MiddleButtonDown;
   EXPECT_TRUE(throttler()->ConsumeInputEvent(event));
   EXPECT_TRUE(throttler()->IsThrottled());
 
   event.modifiers = blink::WebInputEvent::Modifiers::LeftButtonDown;
   EXPECT_TRUE(throttler()->ConsumeInputEvent(event));
   EXPECT_FALSE(throttler()->IsThrottled());
 }
 
 }  // namespace content