Hook up SetInstantPreviewHeight for ChromeOS.

chrome/browser/instant/instant_controller.cc

Index: chrome/browser/instant/instant_controller.cc
diff --git a/chrome/browser/instant/instant_controller.cc b/chrome/browser/instant/instant_controller.cc
index 869c0293123248bbdc986880c17051b1d6508f90..0c2232003052f036496b051e867e9c02cf1374aa 100644
--- a/chrome/browser/instant/instant_controller.cc
+++ b/chrome/browser/instant/instant_controller.cc
@@ -296,6 +296,8 @@ void InstantController::Hide() {
   last_active_tab_ = NULL;
   if (is_showing_) {
     is_showing_ = false;
+    preview_height_ = 100;
+    preview_height_units_ = INSTANT_SIZE_PERCENT;
     delegate_->HideInstant();
   }
   if (GetPreviewContents() && !last_full_text_.empty()) {
@@ -507,6 +509,18 @@ void InstantController::CommitInstantLoader(InstantLoader* loader) {
   CommitCurrentPreview(INSTANT_COMMIT_FOCUS_LOST);
 }
 
+void InstantController::SetInstantPreviewHeight(InstantLoader* loader,
+                                                int height,
+                                                InstantSizeUnits units) {
+  DCHECK_EQ(loader_.get(), loader);
+  if (loader_ != loader || mode_ != EXTENDED)
+    return;
+
+  preview_height_ = height;
+  preview_height_units_ = units;
+  Show();
+}
+
 void InstantController::InstantLoaderPreviewLoaded(InstantLoader* loader) {
   DCHECK_EQ(loader_.get(), loader);
   AddPreviewUsageForHistogram(mode_, PREVIEW_LOADED);
@@ -539,7 +553,7 @@ void InstantController::InstantSupportDetermined(InstantLoader* loader,
 void InstantController::SwappedTabContents(InstantLoader* loader) {
   DCHECK_EQ(loader_.get(), loader);
   if (loader_ == loader && is_showing_)
-    delegate_->ShowInstant();
+    delegate_->ShowInstant(preview_height_, preview_height_units_);
 }
 
 void InstantController::InstantLoaderContentsFocused(InstantLoader* loader) {
@@ -562,7 +576,9 @@ InstantController::InstantController(InstantControllerDelegate* delegate,
       last_transition_type_(content::PAGE_TRANSITION_LINK),
       last_match_was_search_(false),
       is_showing_(false),
-      loader_processed_last_update_(false) {
+      loader_processed_last_update_(false),
+      preview_height_(100),
+      preview_height_units_(INSTANT_SIZE_PERCENT) {
 }
 
 void InstantController::ResetLoader(const std::string& instant_url,
@@ -636,7 +652,7 @@ void InstantController::DeleteLoader() {
 void InstantController::Show() {
   if (!is_showing_) {
     is_showing_ = true;
-    delegate_->ShowInstant();
+    delegate_->ShowInstant(preview_height_, preview_height_units_);
     AddPreviewUsageForHistogram(mode_, PREVIEW_SHOWED);
   }
 }