Introduce WebInputMethodController to blink

components/test_runner/text_input_controller.cc

Index: components/test_runner/text_input_controller.cc
diff --git a/components/test_runner/text_input_controller.cc b/components/test_runner/text_input_controller.cc
index c2241267b8bef72a4d07a80203a24516772ecfdc..50b3393c8f84775c5c0e943f30e3e49d5ade18bc 100644
--- a/components/test_runner/text_input_controller.cc
+++ b/components/test_runner/text_input_controller.cc
@@ -11,7 +11,9 @@
 #include "gin/object_template_builder.h"
 #include "gin/wrappable.h"
 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
+#include "third_party/WebKit/public/web/WebFrameWidget.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
+#include "third_party/WebKit/public/web/WebInputMethodController.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebRange.h"
@@ -160,11 +162,11 @@ void TextInputController::Install(blink::WebLocalFrame* frame) {
 }
 
 void TextInputController::InsertText(const std::string& text) {
-  view()->commitText(blink::WebString::fromUTF8(text), 0);
+  inputMethodController()->commitText(blink::WebString::fromUTF8(text), 0);
 }
 
 void TextInputController::UnmarkText() {
-  view()->finishComposingText(blink::WebWidget::KeepSelection);
+  inputMethodController()->finishComposingText(blink::WebWidget::KeepSelection);
 }
 
 void TextInputController::DoCommand(const std::string& text) {
@@ -203,7 +205,8 @@ void TextInputController::SetMarkedText(const std::string& text,
     underlines.push_back(underline);
   }
 
-  view()->setComposition(web_text, underlines, start, start + length);
+  inputMethodController()->setComposition(web_text, underlines, start,
+                                          start + length);
 }
 
 bool TextInputController::HasMarkedText() {
@@ -292,7 +295,7 @@ void TextInputController::SetComposition(const std::string& text) {
   std::vector<blink::WebCompositionUnderline> underlines;
   underlines.push_back(blink::WebCompositionUnderline(
       0, textLength, SK_ColorBLACK, false, SK_ColorTRANSPARENT));
-  view()->setComposition(
+  inputMethodController()->setComposition(
       newText, blink::WebVector<blink::WebCompositionUnderline>(underlines),
       textLength, textLength);
 }
@@ -301,4 +304,13 @@ blink::WebView* TextInputController::view() {
   return web_view_test_proxy_base_->web_view();
 }
 
+blink::WebInputMethodController* TextInputController::inputMethodController() {
+  blink::WebLocalFrame* mainFrame = view()->mainFrame()->toWebLocalFrame();
+  if (!mainFrame) {
+    CHECK(false) << "WebView does not have a local main frame and"
+                    " cannot handle input method controller tasks.";
+  }
+  return mainFrame->frameWidget()->getActiveWebInputMethodController();
+}
+
 }  // namespace test_runner