Implement GetTextFromRange(), GetTextRange() and GetSelectionRange() for ArcImeService.

components/arc/ime/arc_ime_bridge_impl.cc

Index: components/arc/ime/arc_ime_bridge_impl.cc
diff --git a/components/arc/ime/arc_ime_bridge_impl.cc b/components/arc/ime/arc_ime_bridge_impl.cc
index 13d787ef5eca056fcc8b2189b5b49b7b2709feb2..4a5f0c4220fd018173f79dd9f4a29404964024c0 100644
--- a/components/arc/ime/arc_ime_bridge_impl.cc
+++ b/components/arc/ime/arc_ime_bridge_impl.cc
@@ -155,4 +155,17 @@ void ArcImeBridgeImpl::ShowImeIfNeeded() {
   delegate_->ShowImeIfNeeded();
 }
 
+void ArcImeBridgeImpl::OnCursorRectChangedWithSurroundingText(
+    mojom::CursorRectPtr rect,
+    mojom::TextRangePtr text_range,
+    const std::string& text_in_range,
+    mojom::TextRangePtr selection_range) {
+  delegate_->OnCursorRectChangedWithSurroundingText(
+      gfx::Rect(rect->left, rect->top, rect->right - rect->left,
+                rect->bottom - rect->top),
+      gfx::Range(text_range->start, text_range->end),
+      base::UTF8ToUTF16(text_in_range),
+      gfx::Range(selection_range->start, selection_range->end));
+}
+
 }  // namespace arc