[scheduler] Use Finch to control background throttling.

third_party/WebKit/Source/web/WebSettingsImpl.h

Index: third_party/WebKit/Source/web/WebSettingsImpl.h
diff --git a/third_party/WebKit/Source/web/WebSettingsImpl.h b/third_party/WebKit/Source/web/WebSettingsImpl.h
index a1b69c10edc98f0e4a48a812ea36f94e603cad83..dab96e4f555d098f54c44b55ecdad7859c11a28f 100644
--- a/third_party/WebKit/Source/web/WebSettingsImpl.h
+++ b/third_party/WebKit/Source/web/WebSettingsImpl.h
@@ -203,6 +203,10 @@ class WEB_EXPORT WebSettingsImpl final
   void setWebSecurityEnabled(bool) override;
   void setWideViewportQuirkEnabled(bool) override;
   void setXSSAuditorEnabled(bool) override;
+  void setExpensiveBackgroundThrottlingCPUBudget(float) override;
+  void setExpensiveBackgroundThrottlingInitialBudget(float) override;
+  void setExpensiveBackgroundThrottlingMaxBudget(float) override;
+  void setExpensiveBackgroundThrottlingMaxDelay(float) override;
 
   bool showFPSCounter() const { return m_showFPSCounter; }
   bool showPaintRects() const { return m_showPaintRects; }
@@ -227,6 +231,18 @@ class WEB_EXPORT WebSettingsImpl final
   bool clobberUserAgentInitialScaleQuirk() const {
     return m_clobberUserAgentInitialScaleQuirk;
   }
+  float expensiveBackgroundThrottlingCPUBudget() const {
+    return m_expensiveBackgroundThrottlingCPUBudget;
+  }
+  float expensiveBackgroundThrottlingInitialBudget() const {
+    return m_expensiveBackgroundThrottlingInitialBudget;
+  }
+  float expensiveBackgroundThrottlingMaxDelay() const {
+    return m_expensiveBackgroundThrottlingMaxDelay;
+  }
+  float expensiveBackgroundThrottlingMaxBudget() const {
+    return m_expensiveBackgroundThrottlingMaxBudget;
+  }
 
   void setMockGestureTapHighlightsEnabled(bool);
   bool mockGestureTapHighlightsEnabled() const;
@@ -253,6 +269,10 @@ class WEB_EXPORT WebSettingsImpl final
   // the Android SDK prior to and including version 18. Presumably, this
   // can be removed any time after 2015. See http://crbug.com/313754.
   bool m_clobberUserAgentInitialScaleQuirk;
+  float m_expensiveBackgroundThrottlingCPUBudget;
+  float m_expensiveBackgroundThrottlingInitialBudget;
+  float m_expensiveBackgroundThrottlingMaxBudget;
+  float m_expensiveBackgroundThrottlingMaxDelay;
 };
 
 }  // namespace blink